-> codebook id ----------------------------------------------------------- worker ID number type: numeric (byte) range: [1,15] units: 1 unique values: 15 coded missing: 0 / 15 mean: 8 std. dev: 4.47214 percentiles: 10% 25% 50% 75% 90% 2 4 8 12 14 age -------------------------------------------------------------- Age in Years type: numeric (byte) range: [23,55] units: 1 unique values: 10 coded missing: 0 / 15 mean: 32.8 std. dev: 10.0228 percentiles: 10% 25% 50% 75% 90% 24 25 28 42 46 employ ------------------------------------------- Employment Duration in Years type: numeric (byte) range: [3,14] units: 1 unique values: 5 coded missing: 0 / 15 tabulation: Freq. Value 8 3 3 4 2 9 1 13 1 14 expose ----------------------------------------------- Beryllium Exposure Level type: numeric (byte) range: [1,4] units: 1 unique values: 4 coded missing: 0 / 15 tabulation: Freq. Value 1 1 2 2 2 3 10 4 lt79 ------------------------------------------- Lymphocyte Transformation 1979 type: numeric (float) range: [.8,7.3] units: .1 unique values: 12 coded missing: 0 / 15 mean: 3.46 std. dev: 1.80468 percentiles: 10% 25% 50% 75% 90% 1.2 2.2 3 5 5.4 -> log close